<svg xmlns="http://www.w3.org/2000/svg">
  <filter id="f" x="0" y="0" width="100%" height="100%">
    <feGaussianBlur in="SourceGraphic" stdDeviation="0.1"/>
  </filter>
  <g filter="url(#f)">
    <rect x="0" y="0" width="100" height="100" style="fill: lime;"/>
  </g>
</svg>
